In May, 1847, The American Eagle died peacefully.  About this period Messrs. Tucker and Tyler left the Herald, and Mr. Stowers disposed of his interest to Samuel K. Head.  The new editor of the paper was William Joseph Snelling, who acquired considerable local fame as a bold and fearless writer.  He died in the December of the following year.  Under a new manager, Mr. Samuel R. Glen, the Herald developed into a successful news gatherer.

Special telegrams were regularly received from New York, a Washington correspondent was secured, and the paper covered a much broader field than it ever had before.  Eight to ten columns of reading-matter were printed daily, and it was invariably bright and entertaining.  The circulation showed a steady increase, and on August 17, 1848, was declared to be eighteen thousand seven hundred and fifteen daily, a figure from which it did not recede during the autumn and winter.  After the death of Mr. Snelling, Mr. Tyler was recalled to the chief editorial chair, and heartily co-operated with Mr. Glen and the proprietors in keeping the paper abreast of the times.  On April 2, 1849, the custom of printing four editions daily was inaugurated.  The first was dated 5 o’clock, A.M., the second, 8, the third, 12 M., and the fourth, 2.30 P.M.  That day the force of compositors was increased by four men, and the paper was for the first time printed on a Hoe double-cylinder press, run by steam-power, and capable of producing six thousand impressions an hour.  Mr. Head withdrew from the firm about this time, and Mr. French was announced as sole proprietor throughout the remainder of the year.  In October the announcement was made that the Herald had a larger circulation than any other paper published in Boston or elsewhere, and the publisher made a successful demand for the post-office advertising, which by law was to be given to the paper having the greatest circulation.

During this year (1849) the Herald distanced its competitors and accomplished a feat that was the talk of the town for a long time afterwards, by reporting in full the trial of Professor Webster for the murder of Dr. Parkman.  Extras giving longhand reports of this extraordinary case were issued hourly during the day, and the morning edition contained a shorthand report of the testimony and proceedings of the day previous.  The extras were issued in New York as well as in Boston, the report having been telegraphed sheet by sheet as fast as written, and printed there simultaneously with the Herald’s.  The type of the verbatim report was kept standing, and within an hour after the verdict was rendered pamphlets containing a complete record of the trial were for sale on the street.  The year 1850 found the Herald as prosperous as it had been during the previous twelvemonth.  In September, the editorial, composing, and press rooms were transferred to No. 6 Williams Court, where they remained until abandoned for the new Herald Building, February 9,